Art of elevating grain



Get. 9, 1928. 1,686,793

c. 'BRcEcmsm ART or mavxrme GRAIN Filed Nov. 13, 1924 2 Sheets-Sheet 1 I I i i) l I y w i 3 LI} u; g

IIIIIII/I/ I.

I N VEN TOR.

A TTORNEYS.

Get. 9, 1928;

C. BRCEClNSKl ART OF ELEVA'IING GRAIN Shaina-Sheet Filed NOV. 13 1924 IINVENTORL A TTORNEYS Patented Oct. 9, 1928.

UNITED STATES cant-snowmen, or uaus'ron, wzsconsm.

' ART ELEVATING GRAIN.

Application filed November is, 1924. Serial No. 749,777.

This invention relates to improvements in the art of elevating grain, and more particu larly to small grain elevators of the blower type. The device hereinafter disclosed may also be used as a silo filler or for any other similar purpose, but it'is of particular advantage to use the device in connection with the handling of grain.

- which I am familiar arevs'o designed as to hurl I the grain centrifugallyi through the delivery pipe, thereby causing great damage familiar and at the same time without "injury to the grain. I have found that. the machine hereinafter disclosed is capable of elevating grain without injury thereto and with higher eiiiciency than any other ma chine with which Iam familiar. More specifi-- cally stated, it is the object. of thls invention to ensure the provision of a cushioning body of air which willaccompany the grain and float it or carry it during its upward movement, at the same time protect'ng the grain from contact with the walls of t e conduit through which it is elevated. I have found that a machine'of the type herein disclosedoperates almost silently, being free of the rumbling sound which is characteristic of other machines for the purpose, and which is caused by grain strike ing the sides of the conduit through which it passes.

Existing devices for elevating grains with I to Flgure 3 and showing a. further modlficaon ciently than any machinewith which I am It is a further object of -this invention to of Figure 2, transversel of the axis of rotation of a device em yin this invention.

. Figure 2 is a longitudin section 'through the device shown in Figure 1.

Figure dis a section similar to Figure 1, 00

showing a modified device.

' Figure 4 is a longitudinal section through the device shown in Figure 3.

Figure 5 is a fragmentary view similar tion. a.

Like parts are identified by the same reference characters throughout the several views' I The particular machine herein disclosed is M illustrated as mounted on the bed or platform which, for rtability, is provided with an axle 11 an wheels 12. The bed plates 13, 14, and provide..means for mounting the blowerdevice on platform 10. In

Between bed plates 13 and 14 is mounted a casing 16 which may be constructed in the usual 'manner; to provide a substantially tangential outlet or delivery pipe 17 which, by the addition-of the usual sections, may be M extended to any desired length.

The dasing is provided with two axial inlets 20 and 21, res ectively, the former being provided with a 0 per 22 whereby grain may be introduce conveniently therethrough. Inlet 21 is ada ted for the admission of air only, in accor ance with the principleabove expressed,

Bearing brackets 23 and 23, mounted respectively upon bed plates 14 and 15, provide suitable journals in which shaft 24 is rotatable. The shaft carries a flywheel 25, a driving pulley 26, and within casin 16, a duplex fan designated in its entirety y reference character 27 i 9! The fan may conveniently be assembled upon a central disk 28 having a hub portion 29' keyed at 3Q to shaft 5 Projecting axially from the faceof disk 28 are the blades 31 which are preferably not radial, but are inclined toward their delivery portions reversely with respect to the direction. of rotation of the device. I have found that a reverse inclination of the blades from the radialtends to retard the flow of grain in a manner to render such flow more uniform than is the case where radial blades are employed. The blades tend to carry the grain with them for a short ace of time instead of immediately discharging the grain n from their ends. Thus, the grain is' not, batted or hurled by the blades but. 18 delivered at a comparatively slow rate thereacross. The outer sides of the blades may conveniently be supported by the annular plate 32 which has a central opening 33 registering with the opening 20 of the casing. Each blade may conveniently be flanged at 34 and 35 for convenient connection with the plate 32 and disk 28, respectively. 1 y

The blades 37 project axiall from disk 28 upon the opposite side thereo from blades 31. Blades 37 may be radial and may be fewer in number than blades 31. 7 It is suitable to provide only four blades 37 equally spaced, as indicated in dotted lines in Fi ure 1. I

y way of illustrating a further manner in which the blades may be supported I have shown disk 28 provided with radial angle iron members 38 attached to the face of the disk andcarrying the axially projecting arms 39 and 40 which may likewise comprise angle irons and which serve to brace and support the rear sides of the blades 37. p

In operation, it will be obvious that the duplex fan 27 will deliver a stream of air throu h the outlet pipe 17 which. will pass theret rough simultaneously with such grain as is delivered through hopper 22. Itwill, furthermore, be obvious that even though hopper 22 is filled with grain so as completely to stop inlet ort- 20 against the passage of air, there w1ll nevertheless be an adequate supply of air admitted through theseparate port 21, which port, and blades 37,

. quate for the pneumatic trans are designed to handle a quantity of air adertation of all grain which the machine wil take through ort- 20. g The retrogressvie inclination of lades 31 tends to make such'blades hold the. grain as aforesaid and controls the "rate of dischar e of the grain in such amanner that the disc arge may be approximately uniform if grain is constantly supplied to the hopper.

- At the same'timea uni orm quantity of air will be supplied through port 21'and will be delivered by blades'37 to discharge pipe 17.

The result will be that the rain w1ll be floated upwardly through the ischarge pipe without any material contact with the sides economy in space.

of the pipe. I have found that there is very little noise in the use of a machine of this charactereven though the pipe is curved. The air current acts in such a manner as actually to carry the grain around curves in the pipe while minimizing contact of the grain with the pipe.

The devices shown in Figures 3 to 5, in-

- elusive, are similar in principle to that above discussed but are so designed as to elfect an It will be obvious that as a blower-fan is revolved in operation only the leading sureach successive blade, the remainder "of the space between blades being substantially unused. r

1 Taking advantage of the above fact, I have so designed the fan shown in Figure 3 that I am able to mount the fan in a casing 7F 16: whichis of ordinary width instead of hem of double width, as shown-1n Figure 2. asin 16' has a large inlet rt 45 which is ivided into two concentr c ports 20' and 21, respectively, by the hopper 22', 30

the latter 'being supported on a suitable standard 46.

The shaft 24/ being suitably jonrnaled in bearing bracket 23 carries a fan 27 by means of a. special hub 48' having an annular flange 49. The wheel or fan 27 ity a group of chutes. 50, each of which includes two blades connected by two sides to comprise 'a closed conduit. The several chutes are interconnected at their inner ends,

as shown in Fi re 3, and are carried'by the flange 49 of hu 48. Their general direction. is radial, but the blades 31 are inclined reversely with respect to the direction of rotation of the device as are the blades 31 in the embodiment previously described. Blades 37 in Figures 3 and 4 are not straight, but are angularly bent, the two portions' thereof having opposite inclinations with respect to a radius of-the fan. The 1 Figure 5 construction differs from that shown in Figures '3 and i principally-in the fact that the chutes 50', shown in are so constructed that the-blade 52 which corresponds to blade 37' of Figures 3 and 4 is straight instead of being angularly bent. Either construction will successfully carry out the principles involved in the present invention.

comprises in real:-

Figure 5,

The several chutes may conveniently be 11 braced from each other by extending in the form of annular-webs 56 and 57, theside walls common to all of the chutes 50'. Sector-shaped openings 58 in the annular webs :56 and 57 between chutes 50 are adapted to permitthe entrance of air into the space between the chutes, whereby such air will be acted. uponby blades 37' in the case of the 3 Figure 3 and Figure 4 embodiment, and by blades '52 in the case of the Figurefi embodi- In reality the devices shown in Figures" 3 to 5, inclusive, each provide two fans in the space which would ordinarily be required for one, and the arrangement is such that the one fan is reserved exclusively for air and the other. fan operates upon the grain, and such air as is admitted with the grain, as is also the case in thedevtieeshown in Figures 1 and 2. The grain is id elivered byhopper 22' in the last described constructions to the central space which is common to all of the sevefitl chutes 50. Thereby the grain is delivered to blades 31 of the several chutes 50 and is discharged from said blades through ,the discharge pipe 17 At the same time air' will be admitted through the port 21 which is defined by the casing on pne hand and by the hopper 22' on the other, and such air is acted upon by blades 37 in the Figure 3 and 4 construction, and by bladega52 in the Figure 5 construction. In this way the duplex fan will deliver alter nately from its several blades charges ofair and charges of grain. It differs in this respect from the type of duplex fan shown in Figure 2 in'that the Figure 2 device may be constructed to deliver air and grain simultaneously from the a separate blades which handle these substances. In both devices, however, the delivery to the discharge pipe of an adequate quantity of air to handle the maximum amount of grain which canbe elevated is assured at all times.

I claim:

1. Ina device of the character" described,

the combination with a rotor comprising a common axis spective ends adjacent said axis, said chutes extending inwardly of the periphery of the set of chutes suplportedfor rotation about 21 am interconnected at their rerotor and being inclined rearwardly of the said chutes an Wardly from said center and interconnected for unitary rotation, said chutes extending inwardly of the periphery of the rotor and being inclined rearwardly of the direction of rotation thereof, said hopper being arranged to deliver material in the 0 en center of said rotor for discharge througi said chutes, to,-

gether with a casing having an outlet port,

and an inlet port adapted to admit material to the several spaces between said chutes exteriorly of their interconnection.

3. In a device of the character described, the combination with a hopper, of a rotor provided with a set of chutes extending symmetrically outwardly from the axis of said rotor and interconnected for unitary rotation; said chutes each including a rear blade inclined inwardly of the rotor and rearwardlv of the direction of the rotation thereof,

a front blade spaced from the rear blade and having an outer portion inclined. inwardly of the rotor and rearwardly of the direction of rotation of the rotor and an inner portion inclined forwardly of the direction of the rotor and away from the rear blade; and a casing enclosing said rotor and rovided with a pair of inlet ports, one of which leads to the forward face of the rear blade and the other of which leads to the forward face of the front blade, said casing having an outlet port.

4. In a device of the character described, the combination with a hopper, of a rotor provided with a set of blades extending inwardly of the periphery of the rotor and rearwardly of the direction ofrotation thereof and a casing enclosing said rotor and provided with an outlet and a pair of inlets,

' one of which coo erates with a portion of said blades and t e other of which cooperates with the remainder of said blades.

CARL BRCEGINSKI. 

